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But he said his mission for Gloucester Prison, if he is able to go through with taking it on, would be a little less controversial.

"It was amazing to get inside and see it – the wow factor is definitely there," he said.

"I'm still interested but I want it to be more like a museum, to set it up how the prison was when it was open, for people to really get a feel of it.

"Littledean Jail is controversial, we know that, but this would be nothing like what I do there. I think it should remain as a lasting historical monument."

But Andy does have concerns. "The building is a potentially enormous liability," he said.

"We were walking round and they were showing us the flood markings from 1947. They were 5ft up the walls. That's a worry. There are bodies buried there too and the cost of dealing with that would be enormous.

"There's a lot of work to do and it's a big liability for anyone to take on."

About 122 bodies of dead prisoners lie under the jail and heritage experts warn they will need to be excavated before any redevelopment can take place.

Despite all that, Andy remains determined to push on with his vision for the famous site.

"I couldn't do it on my own," he said. "But I've met with Gloucester City Council and I'm planning on meeting with the county council about it."